Terminal assembly of 3 Way EGR Valve

Abstract

The terminal assembly (50) for the three-way EGR valve (1) of the present invention includes a cover terminal (60) that is assembled with the motor terminal (20) and is composed of a short hand tension terminal (63) that protrudes in one direction of the long hand terminal (61) and forms a Y shape, having a length difference that is shorter than the terminal surface contact extension length (L) of the long hand terminal (61). This overcomes the structural constraint of the EGR valve, which prevents the addition of screws to prevent vibration deformation of the cover, by using the shape of the injection part around the cover terminal, thereby facilitating easy fixing between terminals when assembling the cover with a motor terminal positioning structure. In particular, it has the characteristic that no electrical failure occurs even when wear is reduced in vibration situations, as contact between terminals is maintained due to the relief of stress distribution by the surface contact part of the Y terminal structure and the elimination of the cover gap by the deformation prevention rib.

Description

Technology Field

[0001] The present invention relates to a cover terminal of a three-way EGR valve, and more particularly to a terminal assembly of a three-way EGR valve that enables vibration prevention for the terminal portion without adding a screw for preventing vibration deformation by changing the shape of the cover injection portion of the EGR valve. Background Technology

[0002] Generally, the engine system includes an EGR system, and the EGR system supplies air flow to the combustion chamber of the engine while supplying a portion of the exhaust gas as EGR gas through a three-way EGR valve.

[0003] Referring to FIG. 1, the engine system (8) is configured together with an EGR system (9), and the EGR system (9) includes a 3-way EGR valve (3WAY EGR VALVE) (1).

[0004] For example, the above engine system (8) consists of an intake device that supplies a mixture (fresh air + exhaust gas) to the combustion chamber centered on the engine, and an exhaust device that discharges the engine's exhaust gas. The above EGR system (9) mixes the intake air (i.e., fresh air) from the intake manifold and the EGR gas, which is part of the exhaust gas, with each other before the mixture (fresh air + exhaust gas) is supplied to the combustion chamber of the engine. In this case, the above EGR system (9) is an LP (Low Pressure) EGR system that extracts a portion of the exhaust gas from the exhaust pipe at the downstream end of the turbocharger and catalyst and supplies it as EGR gas.

[0005] For example, the above 3-way EGR valve (1) sets the opening of the EGR valve (2) to 0° and the throttle opening of the intake valve (6) to 0° as the initial valve position when the EGR is fully closed, and sets the opening of the EGR valve (2) to 86° and the throttle opening of the intake valve (6) to 41° when the EGR is opened by operation of the motor / reduction gear, and then returns to the opening of the EGR valve (2) to 0° when the EGR valve (2) returns to 0° by operation of reverse rotation of the motor / reduction gear, and returns to the throttle opening of the intake valve (6) to 0° by the elastic restoring force of the intake return spring.

[0006] Referring to FIG. 2, the cover (4) which is connected to the valve housing (3) of the 3-way EGR valve (1) by a cover screw (4b) forms a cover connector (4a) and a motor receiving space (4c). The cover connector (4a) is connected to a sensor terminal (30) that supplies external power to a sensor and a cover terminal (10) assembled with a motor terminal (20) that supplies external power to a motor (21). The upper part of the motor (21) is located in the motor receiving space (4c).

[0007] In particular, the cover terminal (10) is positioned in the cover terminal receiving space (4d) of the cover (4) and is coupled with the motor terminal (20) by assembling the valve housing (3) and the cover (4). It is manufactured by a press and bending process while being inserted into the cover for ease of fixing and assembly with the motor terminal (20) up to the cover connector (4a).

[0008] For example, the cover terminal (10) forms first and second tension sections (12, 13) in an integral structure with the straight bending section (11), and the first and second tension sections (12, 13) form a slit (14) that is wider at the top and narrower at the bottom.

[0009] Therefore, when the motor terminal (20) is assembled by inserting the motor terminal (20) into the upper wide-lower narrow slit (14) of the straight bending part (11), the first and second tension parts (12, 13) are separated due to the thickness of the motor terminal (20), and then the motor terminal (20) is held in contact with the first and second tension parts (12, 13) by the tension between them.

[0010] However, since the cover (4) is fixed only to the outer part of the cover with a cover screw (4b), the central part of the cover vibrates up and down due to valve vibration, and in particular, valve vibration can be prevented by adding a cover screw (4b), but the addition of a screw is impossible due to structural constraints of the EGR valve (9).

[0011] In addition, the outer rib (4e) of the cover terminal of the above cover (4) only surrounds the upper part of the motor and is too short to come into contact with the motor housing (21a). Therefore, after the cover (4) is assembled on the valve housing (3), the outer rib (4e) of the above cover terminal is in a floating structure that does not come into contact with the motor housing due to a gap (a) with the motor (21), so the inserted motor terminal is also bound to vibrate up and down.

[0012] Accordingly, the above motor terminal (20) experiences wear on the contact part due to vertical vibration caused by cover vibration, and severely, a hole (20a) may form due to the wear of the motor terminal, resulting in poor contact and electrical conduction, which may lead to the inability to perform the product's function.

[0013] Moreover, since the cover terminal (10) is structurally assembled with the motor terminal (20), the first and second tension parts (12, 13) of the cover terminal (10) spread apart due to the thickness of the motor terminal, so the tension part contact section that contacts the motor terminal (20) does not form a surface contact but is formed as a line contact, and since the contact is maintained with the terminal's own tension (F) of the first and second tension parts (12, 13) with respect to this line contact area, when vibration occurs, the wear of the corresponding line contact part intensifies, and if the vibration level is severe, it is inevitable that contact failure and power conduction failure will occur. Prior art literature

[0014] Japanese Published Patent JP2017-174701A (2017.09.28) The problem to be solved

[0015] Accordingly, the present invention, taking into account the above points, aims to provide a terminal assembly for a 3-way EGR valve that resolves the structural constraint of an EGR valve, which prevents the addition of screws to prevent vibration deformation of the cover, by using an injection molded shape around the cover terminal, and facilitates easy fixing between terminals during cover assembly with a motor terminal seating structure, and in particular, prevents electrical failure by maintaining contact between terminals even when wear is reduced in vibration situations through the alleviation of stress distribution by the surface contact part of the Y terminal structure and the elimination of cover gaps by deformation-preventing ribs. means of solving the problem

[0016] The terminal assembly of the three-way EGR valve of the present invention for achieving the above-mentioned purpose includes a cover terminal that is assembled with a motor terminal, and the cover terminal is composed of a long hand terminal and a short hand tension terminal having a length difference in the terminal surface contact extension length, and the long hand terminal and the short hand tension terminal are characterized in that the long hand terminal protrudes in one direction so as to form a Y shape.

[0017] Preferably, the terminal surface contact extension length is formed by making the long hand terminal longer than the short hand tension terminal.

[0018] Preferably, the Y shape is formed by making the long hand terminal straight and the short hand tension terminal elliptical.

[0019] Preferably, a hook distance is formed between the long hand terminal and the short hand tension terminal, and the hook distance is set to be smaller than the width of the motor terminal as a gap between the tension hooks of the long hand terminal and the short hand tension terminal, and the tension hook is formed with a convex shape around its circumference.

[0020] Preferably, an angle is formed between the long hand terminal and the short hand tension terminal, and the angle is set to be larger than the hook distance.

[0021] Preferably, the long hand terminal is connected to a connector part, and the connector part is bent 90 degrees with the long hand terminal.

[0022] And the terminal assembly of the three-way EGR valve of the present invention for achieving the above-mentioned purpose includes a terminal inter-position structure in a cover terminal connected to a motor terminal, wherein the cover terminal has an elliptical short-hand tension terminal that is shorter than a straight long-hand terminal having a terminal surface contact extension length and forms a Y shape, and forms a hook distance through a gap between the tension hook of the long-hand terminal and the short-hand tension terminal, and forms an angle through a gap between the long-hand terminal and the short-hand tension terminal; and the terminal inter-position structure is characterized by being formed as a motor terminal groove of the motor terminal that contacts the tension hook.

[0023] Preferably, the tension hook is formed in a convex shape, and the motor terminal groove is formed in a recessed shape so that the convex shape of the tension hook is caught.

[0024] In addition, the terminal assembly of the three-way EGR valve of the present invention for achieving the above-mentioned purpose includes a tension retaining rib that presses against a cover terminal connected to a motor terminal and a terminal inter-seat structure, wherein the cover terminal has a Y-shape formed by an elliptical short-hand tension terminal that is shorter than a straight long-hand terminal having a terminal surface contact extension length, forms a hook distance through a gap between the tension hook of the long-hand terminal and the short-hand tension terminal, and forms an angle through a gap between the long-hand terminal and the short-hand tension terminal; the terminal inter-seat structure is formed by a motor terminal groove of the motor terminal that is recessed to catch the convex shape of the tension hook; and the tension retaining rib is formed in the cover terminal receiving space of the cover, and is characterized by applying pressure to the rib contact portion of the short-hand tension terminal in the cover terminal receiving space.

[0025] Preferably, the tension-maintaining rib has a space-occupying rib width that narrows the gap with the rib contact portion in the cover terminal receiving space.

[0026] Preferably, the long hand terminal is connected to a connector connection, and the connector connection is bent 90 degrees from the long hand terminal to a cover connector of the cover.

[0027] And, for achieving the above-mentioned purpose, the terminal assembly of the three-way EGR valve of the present invention comprises a tension-maintaining rib that presses against a cover terminal connected to a motor terminal via a terminal-to-terminal seating structure, and a cover deformation prevention rib that contacts the motor housing of the motor connected to the motor terminal, wherein the cover terminal is an elliptical short-hand tension terminal that is shorter than a straight long-hand terminal having a terminal surface contact extension length and forms a Y shape, and forms a hook distance through a gap between the tension hooks of the long-hand terminal and the short-hand tension terminal, and forms an angle through a gap between the long-hand terminal and the short-hand tension terminal; the terminal-to-terminal seating structure is formed by a motor terminal groove of the motor terminal that is recessed to catch the convex shape of the tension hook; and the tension-maintaining rib has a space-occupying rib width that narrows the gap with the rib contact portion of the short-hand tension terminal in the cover terminal receiving space of the cover, and applies a pressing force to the rib contact portion; The above-mentioned cover deformation prevention rib is characterized by forming a motor receiving space of the cover and having a length that contacts the motor housing located in the motor receiving space.

[0028] Preferably, the cover deformation prevention rib maintains constant contact with the upper flange surface of the motor housing by the screw fastening force of the cover screw assembling the valve housing equipped with the motor and the cover, and is composed of a pair of first and second cover deformation prevention ribs that contact the left and right sides of the motor housing. Effects of the invention

[0029] The terminal assembly of the 3-way EGR valve of the present invention is composed of a combination of a Y-shaped cover terminal, a tension-maintaining rib, a cover deformation prevention rib, and a motor terminal groove. This allows for easy fixing of the cover terminal during cover assembly through the motor terminal seating structure of the motor terminal groove. In particular, the Y-shaped cover terminal and the tension-maintaining rib enable stress distribution relief and wear reduction through constant surface contact, thereby realizing the function and effect of reducing the risk of contact failure between terminals and electrical conduction failure during vertical vibration of the cover. Brief explanation of the drawing

[0030] FIG. 1 is an example of an EGR system with a general 3-way EGR valve unit applied, FIG. 2 is an example of a cover terminal structure of a conventional 3-way EGR valve and terminal wear caused by vibration, FIG. 3 is a configuration diagram of a terminal assembly of a 3-way EGR valve according to the present invention, FIG. 4 is a configuration diagram of a cover terminal among terminal assemblies according to the present invention, FIG. 5 is a coupling structure between the cover terminal and the motor terminal of the terminal assembly when assembling the valve housing and cover according to the present invention, FIG. 6 is an example in which the gap between the cover and the motor is removed by a cover deformation prevention rib after assembling the valve housing and cover according to the present invention. Specific details for implementing the invention

[0031] Embodiments of the present invention will be described in detail below with reference to the attached illustrative drawings. Since these embodiments are merely examples and can be implemented in various different forms by those skilled in the art to which the present invention pertains, the embodiments described herein are not limited to the examples described herein.

[0032] Referring to FIG. 3, the cover (4), which is fastened to the valve housing (3) and the cover screw (4b), has an injection shape positioned around the cover terminal that includes a motor receiving space (4c) that accommodates the upper part of the motor (21), and the terminal assembly (50) is embedded in the injection shape.

[0033] Specifically, the terminal assembly (50) is connected to the cover connector (4a) of the cover (4) as a Y-shaped cover terminal (60) to supply external power, and includes a tension retaining rib (70), a cover deformation prevention rib (80), and a motor terminal groove (90) combined with the Y-shaped cover terminal (60).

[0034] For example, the above Y-shaped cover terminal (60) is located in a cover terminal receiving space (4d) that surrounds the motor receiving space (4c) of the cover (4) and is combined with the motor terminal (20) by assembling the valve housing (3) and the cover (4).

[0035] To this end, the Y-shaped cover terminal (60) forms a Y-shaped structure with a long hand terminal (61) and a short hand tension terminal (63).

[0036] The long hand terminal (61) protrudes from the short hand tension terminal (63) with a longer surface contact extension length (L) than the short hand tension terminal (63), thereby forming a terminal surface contact section (K) (see FIG. 5) with the motor terminal (20).

[0037] The short hand tension terminal (63) is positioned above the long hand terminal (61) with a length shorter than the surface contact extension length (L) while forming an integral structure with the long hand terminal (61) above the long hand terminal (61), thereby being located on the motor terminal (20) above the terminal surface contact section (K).

[0038] In particular, the short hand tension terminal (63) is formed in an elliptical shape for elasticity, and by forming the end portion of the ellipse as a straight rib contact portion (63a), it receives a pressure (F) from the tension maintaining rib (70) and is strongly pushed toward the motor terminal (20), thereby maintaining strong contact with one side of the motor terminal (20).

[0039] In addition, a tension hook (64) protruding toward the long hand terminal (61) is formed on the short hand tension terminal (63), and the tension hook (64) forms a seating structure (64, 90) between the motor terminal groove (90) of the motor terminal (20) and the terminal, thereby facilitating the fixation of the cover terminal during cover assembly.

[0040] To this end, the tension hook (64) can facilitate sliding when the Y-shaped cover terminal (60) is assembled with the motor terminal (20) by forming its end portion in a convex shape.

[0041] For example, the tension maintaining rib (70) is positioned in the cover terminal receiving space (4d) of the cover (4), and by reducing the width of the cover terminal receiving space (4d) by the space-occupying rib width (b), the short hand tension terminal (63) can maintain tension at all times by constantly contacting the rib contact portion (63a) of the short hand tension terminal (63) located in the cover terminal receiving space (4d).

[0042] And the above cover deformation prevention rib (80) is composed of a first cover deformation prevention rib (80A) surrounding the upper part of the motor (21) from the left and a second cover deformation prevention rib (80B) surrounding the upper part of the motor (21) from the right, and is manufactured in the shape of the injection molded part of the cover (4).

[0043] In particular, the lengths of the first and second cover deformation prevention ribs (80A, 80B) are divided into a cover terminal outer rib (81) and a motor contact extension rib (82). The cover terminal outer rib (81) is positioned above the motor (21) and has a length that has a gap with the motor housing (21a), and the motor contact extension rib (82) extends from the cover terminal outer rib (81) and has a length that contacts the motor housing (21a). In this case, the motor contact extension rib (82) extends from the motor direction of the cover terminal outer rib (81) and forms an approximate “L” shape.

[0044] Therefore, the first and second cover deformation prevention ribs (80A, 80B) can eliminate the vibration vulnerability of the existing cover terminal outer rib (4e) (see FIG. 2) that did not touch the motor housing (21a) by maintaining contact with the motor housing (21a) with the length of the motor contact extension rib (82) protruding from the cover terminal outer rib (81) toward the motor housing (21a).

[0045] Additionally, the motor terminal groove (90) is carved in a straight slot shape on one side of the upper side of the motor terminal (20) (i.e., the motor terminal surface that contacts the tension hook (64) protruding from the short hand tension terminal (63)) to form a terminal inter-position structure (64, 90), and the terminal inter-position structure facilitates the fixation of the Y-shaped cover terminal (60) to the motor terminal (20) by the tension hook (64) being caught in the motor terminal groove (90) when the cover (4) is assembled to the valve housing (3).

[0046] In particular, the motor terminal (20) has a sharp wedge-shaped upper portion of the motor terminal groove (90) to facilitate the convex shape and sliding of the tension hook (64).

[0047] Referring to FIG. 4, the Y-shaped cover terminal (60) is divided into a Y-shaped tension section (61, 63, 64, 65, 66) and a straight connector connection section (68), and is manufactured by a press and bending process while being inserted into the cover to facilitate fixing to the cover connector (4a) of the cover (4) and assembly with the motor terminal (20).

[0048] In particular, the connector connection part (68) is bent at a 90-degree angle with the long hand terminal (61) of the Y-shaped tension part (61, 63, 64, 65, 66) after press manufacturing, so that when the Y-shaped tension part (61, 63, 64, 65, 66) is connected to the motor terminal (20), the motor terminal (20) can be assembled with the counterpart connector (i.e., the cover connector (4a) of the cover (4)) connected to the connector connection part (68).

[0049] Specifically, the above Y-shaped tension section (61, 63, 64, 65, 66) consists of a straight long hand terminal (61), an elliptical short hand tension terminal (63), a round tension hook (64), a hook distance (65), and an angle between them (66).

[0050] In particular, the assembly and structural constraints of the EGR valve do not exceed the range described for the structural features of the tension hook (63), hook distance (65), and angle (66) of the Y-shaped tension part (61, 63, 64, 65, 66), and since 90-degree bending must be maintained, if a design change to the range described above is necessary, the design must be made considering the press and bending directions.

[0051] For example, the long hand terminal (61) and the short hand tension terminal (63) have a length difference equal to the surface contact extension length (L), and the surface contact extension length (L) can be extended by making the long hand terminal (61) longer than the short hand tension terminal (63), thereby extending the terminal surface contact section (K) (see FIG. 5) for the motor terminal (20).

[0052] And, the short hand tension terminal (63) is formed on one side of the long hand terminal (61) with a length shorter than the surface contact extension length (L) in a structure in which its upper part is integrated with the long hand terminal (61), thereby providing a position in which a positioning structure (64, 90) between the motor terminal (20) and the terminal is formed.

[0053] In particular, the short hand tension terminal (63) has a rib contact portion (63a) formed at its end, which is in constant contact with a tension maintaining rib (70) so that tension can be maintained at all times.

[0054] Additionally, the tension hook (64) protrudes from the rib contact portion (63a) of the short hand tension terminal (63) toward the long hand terminal (61), and its circumference forms a convex shape so that it can slide on the motor terminal (20).

[0055] Therefore, when assembling the cover (4), the Y-shaped tension part (61, 63, 64, 65, 66) is assembled by the tension hook (64) of the short hand tension terminal (63) sliding against the motor terminal (20), and finally, the tension hook (64) is seated in the motor terminal groove (90) in the terminal inter-position structure (64, 90) so that the assembly can be completed.

[0056] However, the short hand tension terminal (63) may have various shapes other than an elliptical shape, taking into account the actual terminal contact portion (i.e., the terminal surface contact section (K)), and the surface contact extension length (L) for the long hand terminal (61) may also be implemented in various positions.

[0057] Additionally, the hook distance (65) is formed using the hook distance space between the long hand terminal (61) and the tension hook (64), and the angle between (66) is formed using the angle between the long hand terminal (61) and the short hand tension terminal (63).

[0058] Therefore, the hook distance (65) is the distance between the long hand terminal (61) and the tension hook (64) (i.e., the tension part and the terminal contact part), and the hook distance (65) is formed to be smaller than the width (or thickness) of the motor terminal (20) for tension. On the other hand, the angle between (66) is the distance between the long hand terminal (61) and the short hand tension terminal (63) (i.e., the tension part and the terminal contact part), and the angle between (66) is formed to be larger than the hook distance for tension. In this case, the angle between (66) has an acute angle such that the short hand tension terminal (63) spreads from top to bottom.

[0059] And the connector connection part (68) is a straight plate member having a predetermined thickness and width that is bent 90 degrees from the upper part of the long hand terminal (61) and extends straight toward the cover connector (4a) of the cover (4).

[0060] Referring to FIG. 5, the terminal assembly (50) is assembled with the valve housing (3) together with the cover (4), so that the Y-shaped cover terminal (60) is automatically assembled with the motor terminal (20) provided in the valve housing (3).

[0061] Specifically, when the assembly of the cover (4) is divided into “before cover assembly,” “during cover assembly,” and “after cover assembly,” in the “before cover assembly,” the cover (4) has a terminal assembly (50), a tension retaining rib (70), and a cover deformation prevention rib (80A, 80B) located around the motor receiving space (4c), and the valve housing (3) has a motor terminal (20) having a motor terminal groove (90) and a motor (21) assembled therein.

[0062] Therefore, the above cover (4) moves downward toward the valve housing (3) and is coupled onto the valve housing (3). In this case, the cover screw (4b) is not yet fastened.

[0063] Next, during the “cover assembly,” the motor receiving space (4c) of the cover (4) accommodates the upper part of the motor (21) of the valve housing (3), and the Y-shaped cover terminal (60) is assembled with the motor terminal (20).

[0064] Then, the Y-shaped cover terminal (60) inserts the upper part of the motor terminal (20) into the space of the hook distance (65), and the tension hook (64), which is a terminal inter-positioning structure (64, 90), is caught in the motor terminal groove (90), thereby establishing the assembly position between the terminals (20, 60). In this case, the convex shape of the tension hook (64) facilitates sliding on the motor terminal (20), and the wedge shape of the motor terminal (20) toward the motor terminal groove (90) facilitates insertion into the hook distance (65), which is narrower than the width of the motor terminal.

[0065] In addition, among the long hand terminal (61) and short hand tension terminal (63) of the Y-type cover terminal (60), the long hand terminal (61) forms a terminal surface contact section (K) with the motor terminal (20), and the short hand tension terminal (63) maintains terminal tension at all times during the assembly process due to the tension maintaining rib (70) that contacts the rib contact section (63a).

[0066] Finally, the “after cover assembly” above forms a complete assembly in which the Y-shaped cover terminal (60) has a terminal surface contact section (K) with the motor terminal (20) and a strong pressure (F) is applied from the tension maintaining rib (70).

[0067] In particular, the above terminal surface contact section (K) is extended with the surface contact length (L) of the long hand terminal (61) to extend the surface contact area with the motor terminal (20), thereby reducing the risk of contact and current failure by alleviating stress distribution and reducing wear during vibration.

[0068] And the above pressure (F) presses the short hand tension terminal (63), thereby allowing the short hand tension terminal (63) to maintain tension.

[0069] Referring to FIG. 6, when the cover screw (4b) fastens the cover (4) and the valve housing (3) at six locations, the cover deformation prevention rib (80) maintains constant contact with the upper flange surface of the motor housing (21a) through the motor contact extension rib (82) via the screw fastening force, thereby eliminating the gap (a) that was not in contact with the motor (21). In this case, the cover screw (4b) is a self-tapping screw.

[0070] Therefore, the above cover deformation prevention rib (80) eliminates the gap (a) using the motor contact extension rib (82) extended to the motor (21), thereby minimizing the amount of vertical deformation caused by vibration of the motor terminal (20) inserted into the valve housing (3), making it possible to prevent deformation and minimize wear.

[0071] Accordingly, the Y-shaped cover terminal (60) is integrated with the cover (4) around the cover terminal using the shape of the injection molding part of the cover (4), and forms a cover terminal fixing reinforcement part that maintains constant tension by the tension maintaining rib (70), eliminates the motor housing gap by the cover deformation prevention rib (80), and engages the tension hook by the motor terminal groove (90). Even if the central part of the cover (4) vibrates up and down due to valve vibration, the cover terminal fixing reinforcement part can resolve all contact and current failures, and the formation of holes (20a) due to motor terminal wear that occurred in the existing cover terminal (10) (see FIG. 2) having a straight bending part (11).

[0072] As described above, the terminal assembly (50) of the three-way EGR valve (1) according to the present embodiment has a length difference that is shorter than the terminal surface contact extension length (L) of the long hand terminal (61), and is composed of a short hand tension terminal (63) that protrudes in one direction of the long hand terminal (61) and forms a Y shape, and includes a cover terminal (60) that is assembled with the motor terminal (20). This resolves the structural constraint of the EGR valve, which prevents the addition of screws to prevent vibration deformation of the cover, by using the shape of the injection part around the cover terminal, thereby facilitating easy fixing between terminals when assembling the cover with a motor terminal positioning structure. In particular, stress distribution is relieved by the surface contact part of the Y terminal structure, and the cover gap is eliminated by the deformation prevention rib. This ensures that even when wear is reduced in vibration situations, contact between terminals is maintained, so no electrical failure occurs. Explanation of the symbols

[0073] 1:3-way EGR valve 2 : EGR valve 3: Valve housing 4 : Cover 4a : Cover connector 4b: Cover screw 4c: Motor accommodation space 4d: Cover terminal accommodation space 4e : Cover terminal outer rib 5: EGR flow port 6 : Intake valve 7: Air flow port 8: Engine System 9: EGR System 10 : Cover terminal 11: Straight banding section 12, 13: 1st and 2nd tension sections 14 : Top wider, bottom narrower slit 20: Motor Terminal 20a : hole 21 : Motor 21a: Motor housing 30: Sensor terminal 50 : Terminal Assembly 60 : Y-type cover terminal 61 : Long Hand Terminal 63: Short Hand Tension Terminal 63a: Rib contact 64 : Tension Hook 65 : Hook distance 66 : Angle between 68 : Connector connection part 70 : Tension-maintaining rib 80 : Cover deformation prevention rib 80A, 80B: 1st and 2nd cover deformation prevention ribs 81 : Cover terminal outer rib 82: Motor contact extension rib 90 : Motor Terminal Home

Claims

Claim 1 A terminal assembly of a three-way EGR valve, characterized by including a cover terminal connected to a motor terminal, wherein the cover terminal is composed of a long hand terminal and a short hand tension terminal, and the long hand terminal and the short hand tension terminal have a length difference equal to the terminal surface contact extension length. Claim 2 A terminal assembly of a three-way EGR valve according to claim 1, characterized in that the terminal surface contact extension length is formed by making the long hand terminal longer than the short hand tension terminal. Claim 3 A terminal assembly of a three-way EGR valve according to claim 1, characterized in that the short hand tension terminal is formed closer to the center than the long hand terminal. Claim 4 A terminal assembly of a three-way EGR valve according to claim 1, characterized in that a hook distance is formed between the long hand terminal and the short hand tension terminal, and the hook distance is a gap between the tension hooks of the long hand terminal and the short hand tension terminal. Claim 5 A terminal assembly of a three-way EGR valve according to claim 4, characterized in that the hook distance is set to be smaller than the width of the motor terminal. Claim 6 A terminal assembly of a three-way EGR valve according to claim 4, wherein the tension hook is formed with a convex shape around its circumference. Claim 7 A terminal assembly of a three-way EGR valve according to claim 4, characterized in that an angle is formed between the long hand terminal and the short hand tension terminal, and the angle is set to be larger than the hook distance. Claim 8 A terminal assembly of a three-way EGR valve according to claim 1, wherein the long hand terminal is connected to a connector connection portion, and the connector connection portion is bent 90 degrees from the long hand terminal. Claim 9 A terminal assembly of a three-way EGR valve, characterized in that a cover terminal connected to a motor terminal; the cover terminal comprises a straight long-hand terminal and a short-hand tension terminal shorter in length than the long-hand terminal, a hook distance is formed by a gap between the tension hooks of the long-hand terminal and the short-hand tension terminal, and an angle is formed by a gap between the long-hand terminal and the short-hand tension terminal; and the motor terminal groove formed in the motor terminal contacts the tension hook. Claim 10 A terminal assembly of a three-way EGR valve according to claim 9, wherein the tension hook is formed in a convex shape and the motor terminal groove supports the convex shape of the tension hook. Claim 11 A terminal assembly of a three-way EGR valve according to claim 9, characterized in that the hook distance is set smaller than the width of the motor terminal and the angle between them is set larger than the hook distance. Claim 12 A terminal assembly of a three-way EGR valve according to claim 9, wherein the long hand terminal is connected to a connector connection portion, and the connector connection portion is bent 90 degrees from the long hand terminal. Claim 13 A terminal assembly of a 3-way EGR valve, comprising a tension retaining rib that presses a cover terminal connected to a motor terminal, wherein the cover terminal forms a Y shape with an elliptical short-hand tension terminal shorter than a straight long-hand terminal having a terminal surface contact extension length, forms a hook distance with a gap between the tension hooks of the long-hand terminal and the short-hand tension terminal, and forms an angle with a gap between the long-hand terminal and the short-hand tension terminal; formed by a motor terminal groove of the motor terminal to support the convex shape of the tension hook; and wherein the tension retaining rib is formed in a cover terminal receiving space of the cover, and applies a pressurizing force to the rib contact portion of the short-hand tension terminal in the cover terminal receiving space. Claim 14 A terminal assembly of a three-way EGR valve according to claim 13, wherein the tension-maintaining rib has a space-occupying rib width that narrows the gap with the rib contact portion in the cover terminal receiving space. Claim 15 A terminal assembly of a three-way EGR valve according to claim 13, characterized in that the hook distance is set smaller than the width of the motor terminal and the angle between them is set larger than the hook distance. Claim 16 A terminal assembly of a three-way EGR valve according to claim 13, wherein the long hand terminal is connected to a connector connection portion, and the connector connection portion is bent 90 degrees from the long hand terminal and connected to a cover connector of the cover. Claim 17 It includes a tension-maintaining rib that presses a cover terminal connected to a motor terminal, and a cover deformation-preventing rib that contacts the motor housing of a motor connected to the motor terminal, wherein the cover terminal is composed of a long-hand terminal and a short-hand tension terminal, and the long-hand terminal and the short-hand tension terminal have a length difference equal to the terminal surface contact extension length, and a hook distance is formed by a gap between the tension hooks of the long-hand terminal and the short-hand tension terminal, and an angle is formed by a gap between the long-hand terminal and the short-hand tension terminal; the tension hook is formed in a convex shape, and the motor terminal groove supports the convex shape of the tension hook; the tension-maintaining rib has a space-occupying rib width that narrows the gap with the rib contact portion of the short-hand tension terminal in the cover terminal receiving space of the cover, and applies a pressure force to the rib contact portion; the cover deformation-preventing rib forms a motor receiving space of the cover, and the A terminal assembly of a three-way EGR valve characterized by having a length in contact with the motor housing. Claim 18 A terminal assembly of a three-way EGR valve according to claim 17, wherein the cover deformation prevention rib maintains constant contact with the upper flange surface of the motor housing by the screw fastening force of the cover screw assembling the valve housing equipped with the motor and the cover. Claim 19 A terminal assembly of a three-way EGR valve according to claim 18, characterized in that the cover deformation prevention rib is composed of a pair of first and second cover deformation prevention ribs that contact the left and right sides of the motor housing. Claim 20 A terminal assembly of a three-way EGR valve according to claim 17, characterized in that the hook distance is set smaller than the width of the motor terminal and the angle between them is set larger than the hook distance. Claim 21 A terminal assembly of a three-way EGR valve according to claim 17, wherein the long hand terminal is connected to a connector connection portion, and the connector connection portion is bent 90 degrees from the long hand terminal and connected to a cover connector of the cover.

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